http://www.cnr.it/ontology/cnr/individuo/prodotto/ID208402

IMA Report - Nomenclature of the amphibole supergroup (Articolo in rivista)

Type

Prodotto della ricerca (Classe)
Articolo in rivista (Classe)

Label

IMA Report - Nomenclature of the amphibole supergroup (Articolo in rivista) (literal)

Anno

2012-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.2138/am.2012.4276 (literal)

Alternative label

Hawthorne F. C. [1]; Oberti R. [2]; Harlow G. E. [3]; Maresch W. V. [4]; Martin R. F. [5]; Schumacher J. C. [6]; Welch M. D. [7] (2012)
IMA Report - Nomenclature of the amphibole supergroup
in The American mineralogist (Online); Mineralogical Society of America, Washington (Italia)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Hawthorne F. C. [1]; Oberti R. [2]; Harlow G. E. [3]; Maresch W. V. [4]; Martin R. F. [5]; Schumacher J. C. [6]; Welch M. D. [7] (literal)

Pagina inizio

2031 (literal)

Pagina fine

2048 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://www.minsocam.org/msa/ammin/toc/ (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

97 (literal)

Rivista

?The ?American mineralogist (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

11-12 (literal)

Note

ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

[1] Geological Sciences, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada [2] CNR-Istituto di Geoscienze e Georisorse, unità di Pavia, via Ferrata 1, I-27100 Pavia, Italy [3] Department of Earth and Planetary Sciences, American Museum of Natural History, Central Park West at 79th Street, New York, New York 10024, U.S.A. [4] Institute of Mineralogy, Geology and Geophysics, Ruhr-University, D-44780 Bochum, Germany [5] Department of Earth and Planetary Sciences, McGill University, 3450 University Street, Montreal, Quebec H3A 2A7, Canada [6] Department of Earth Sciences, Wills Memorial Building, University of Bristol, Bristol BS8 1RJ, U.K. [7] Department of Mineralogy, The Natural History Museum, Cromwell Road, London SW7 5BD, U.K. (literal)

Titolo

IMA Report - Nomenclature of the amphibole supergroup (literal)

Abstract

A new classification and nomenclature scheme for the amphibole-supergroup minerals is described, based on the general formula AB(2)C(5)T(8)O(22)W(2), where A = square, Na, K, Ca, Pb, Li; B = Na, Ca, Mn2+, Fe2+, Mg, Li; C = Mg, Fe2+, Mn2+, Al, Fe3+, Mn3+, Ti4+, Li; T = Si, Al, Ti4+, Be; W = (OH), F, Cl, O2-. Distinct arrangements of formal charges at the sites (or groups of sites) in the amphibole structure warrant distinct root names, and are, by implication, distinct species; for a specific root name, different homovalent cations (e.g., Mg vs. Fe) or anions (e.g., OH vs. Fe2+) are indicated by prefixes (e.g., ferro-, fluoro-). The Classification is based on the A, B, and C groups of cations and the W group of anions, as these groups show the maximum compositional variability in the amphibole structure. The amphibole supergroup is divided into two groups according to the dominant W species: (w)(OH,F,Cl)-dominant amphiboles and O-w-dominant amphiboles (oxo-amphiboles). Amphiboles with (OH, F, Cl) dominant at W are divided into eight subgroups according to the dominant charge-arrangements and type of B-group cations: magnesium-iron-manganese amphiboles, calcium amphiboles, sodium-calcium amphiboles, sodium amphiboles, lithium amphiboles, sodium-(magnesium-iron-manganese) amphiboles, lithium-(magnesium-iron-manganese) amphiboles and lithium-calcium amphiboles. Within each of these subgroups, the A- and C-group cations are used to assign specific names to specific compositional ranges and root compositions. Root names are assigned to distinct arrangements of formal charges at the sites, and prefixes are assigned to describe homovalent variation in the dominant ion of the root composition. For amphiboles with O dominant at W, distinct root-compositions are currently known for four (calcium and sodium) amphiboles, and homovalent variation in the dominant cation is handled as for the (w)(OH,F,Cl)-dominant amphiboles. With this classification, we attempt to recognize the concerns of each constituent community interested in amphiboles and incorporate these into this classification scheme. Where such concerns conflict, we have attempted to act in accord with the more important concerns of each community. (literal)

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